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    • 101. 发明授权
    • Polishing pads for chemical mechanical planarization
    • 抛光垫用于化学机械平面化
    • US06454634B1
    • 2002-09-24
    • US09631784
    • 2000-08-03
    • David B. JamesArun VishwanathanLee Melbourne CookPeter A. BurkeDavid Shidner
    • David B. JamesArun VishwanathanLee Melbourne CookPeter A. BurkeDavid Shidner
    • B24B100
    • B24B37/26B24B37/042B24D3/28
    • An improved pad and process for polishing metal damascene structures on a semiconductor wafer. The process includes the steps of pressing the wafer against the surface of a polymer sheet in combination with an aqueous-based liquid that optionally contains sub-micron particles and providing a means for relative motion of wafer and polishing pad under pressure so that the moving pressurized contact results in planar removal of the surface of said wafer, wherein the polishing pad has a low elastic recovery when said load is removed, so that the mechanical response of the sheet is largely anelastic. The improved pad is characterized by a high energy dissipation coupled with a high pad stiffness. The pad exhibits a stable morphology that can be reproduced easily and consistently. The pad surface resists glazing, thereby requiring less frequent and less aggressive conditioning. The benefits of such a polishing pad are low dishing of metal features, low oxide erosion, reduced pad conditioning, longer pad life, high metal removal rates, good planarization, and lower defectivity (scratches and Light Point Defects).
    • 用于在半导体晶片上抛光金属镶嵌结构的改进的焊盘和工艺。 该方法包括以下步骤:将聚合物片材的表面压在聚合物片材的表面上,并与含有亚微米级颗粒的含水基液体组合,并提供在压力下使晶片和抛光垫片相对运动的装置, 接触导致平面去除所述晶片的表面,其中抛光垫在去除所述负载时具有低弹性恢复,使得片材的机械响应大大无弹性。 改进的焊盘的特征在于具有高的能量耗散以及高焊盘刚度。 该垫具有稳定的形态,可以容易且一致地再现。 垫表面抵抗玻璃窗,从而需要较少的频繁和较不积极的调理。 这种抛光垫的优点是金属特征的低凹陷,低氧化物侵蚀,减少的焊盘调节,更长的焊盘寿命,高金属去除速率,良好的平坦化和较低的缺陷(划痕和光点缺陷)。
    • 103. 发明授权
    • Method for determining the efficiency of a planarization process
    • 确定平坦化处理效率的方法
    • US6057068A
    • 2000-05-02
    • US205483
    • 1998-12-04
    • Christopher H. RaederThomas BrownPeter A. Burke
    • Christopher H. RaederThomas BrownPeter A. Burke
    • B24B49/00H01L21/306G03F9/00
    • B24B37/005B24B49/00H01L21/30625
    • A method for measuring the planarization efficiency of a planarization process and a device for use with the method are provided. The device may be a substrate having a set of isolated features, such as trenches or hills, with different widths. In the method, a removable layer of material is formed over the substrate. The substrate features form corresponding features in the removable layer with varying dimensions. A pre-planarization thickness of the removable layer of material is measured at each feature and at one or more of isolation areas. The removable layer of material is then planarized using a planarization process associated with one or more process parameters. A post-planarization thickness of the removable is measured at each feature and at one or more of the isolation regions. The planarization efficiency of the planarization process is then determined as a function of the dimensions of the substrate features or corresponding features in the removable layers and/or one or more process parameters. The determined planarization efficiency may be output by, for example, generating a graph of the planarization efficiency or using the planarization efficiency to change one or more parameters of the planarization process.
    • 提供了一种用于测量平面化处理的平坦化效率的方法和用于该方法的装置。 该装置可以是具有一组具有不同宽度的隔离特征(例如沟槽或丘陵)的基板。 在该方法中,在衬底上形成可去除的材料层。 衬底特征在具有不同尺寸的可移除层中形成相应的特征。 在每个特征和一个或多个隔离区域处测量可去除材料层的预平坦化厚度。 然后使用与一个或多个工艺参数相关联的平坦化处理将可移除的材料层平坦化。 在每个特征和一个或多个隔离区域处测量可去除的后平面化厚度。 然后,平坦化处理的平坦化效率被确定为可移除层中的衬底特征或相应特征的尺寸和/或一个或多个工艺参数的函数。 确定的平坦化效率可以通过例如生成平坦化效率的图形或者使用平坦化效率来改变平坦化处理的一个或多个参数来输出。